LED driving structure

Abstract

An LED driving structure includes an LED module, a power supply circuit, a voltage stabilizing circuit, a temperature compensation circuit and a gallium nitride field-effect transistor that are electrically connected. The power supply circuit is configured to supply a current to the LED module. The voltage stabilizing circuit includes a rectifying diode, a resistor and a Zener diode, and is connected to a gate of the gallium nitride field-effect transistor through the temperature compensation circuit for providing a stable voltage. The temperature compensation circuit includes at least one resistor, a thermistor and a transistor connected to the gate of the gallium nitride field-effect transistor for the LED module after being energized to maintain its power stably when there are voltage fluctuations and temperature fluctuations.

What is claimed is: 
     
       1. An LED driving structure, comprising an LED module, a power supply circuit, a voltage stabilizing circuit, a temperature compensation circuit and a gallium nitride field-effect transistor that are electrically connected, wherein:
 the power supply circuit is configured to supply a current to the LED module; 
 the voltage stabilizing circuit includes a rectifying diode, a resistor and a Zener diode, and is connected to a gate of the gallium nitride field-effect transistor through the temperature compensation circuit for providing a stable voltage; 
 the temperature compensation circuit includes at least one resistor connected to the voltage stabilizing circuit, a thermistor and a transistor connected to the gate of the gallium nitride field-effect transistor to compensate for the voltage when there is a change in temperature, so that the LED module maintains power stably when heat is generated after being energized. 
 
     
     
       2. The LED driving structure as claimed in  claim 1 , wherein the voltage stabilizing circuit further includes a capacitor. 
     
     
       3. The LED driving structure as claimed in  claim 1 , wherein the power supply circuit has a plurality of rectifying diodes for supplying a constant current to the LED module. 
     
     
       4. The LED driving structure as claimed in  claim 1 , wherein the LED module is fabricated by using chip-on-board technology. 
     
     
       5. The LED driving structure as claimed in  claim 1 , wherein the LED module is a high-voltage LED for a vehicle.